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Message: <blockquote data-quote="HuskerGT" data-source="post: 1359696" data-attributes="member: 10056"><p>Picked it up on Monday and it ran great.  They said it fired up after sitting all weekend and ran great in the morning, afternoon and in the evening before I picked it up.  Ran great in our test drive.  I took it home but told them I'll test it in a couple days.  Fired it up Thursday afternoon and back to the same stuff.  According to them the fuel pump psi is within spec at 29 psi, where Ford says anywhere from 28-43 psi is good.  Doesn't break up as hard if I creep up on 3800 rpm.  If I accelerate harder it breaks up harder.  Not sure what it could be now.  Could it be the FP can't keep up?</p></blockquote><p></p>